Summary of the project

In France 80% of the water consumed is pumped from underground. In Chalon-sur-Saône, the water is collected naturally in the alluvial groundwater of the Saône and then sent to one of the four production plants.
The Grand Chalon water authority manages the drinking water and wastewater treatment facilities with a private operator. The plant serves the whole city of Chalon sur Saône and the surrounding communities. This station was the subject of a report on its operation; you can find the details on the France 3 website (in French only).

In 2016, this drinking water station was to undergo renovation of the electrical distribution and automatic systems.


The customer challenge

The difficulty of this project was to keep the station available; there was no question of cutting off the drinking water supply to the whole of Chalon! Comeca was able to rise to the challenge by putting in place temporary alternative means. Our teams installed temporary electrical equipment to control the pumps while the installation was being replaced. Since this installation, Comeca has renovated approximately ten pieces of equipment for the private operator (pumping stations, water treatment, etc.).

The Comeca solution

Our teams carried out all the studies and work, including the installation and connection of the equipment as well as the laying of the cable.

Details of the work carried out:

  • Renewing all of the two main LV switchboards and ozone generator units of the station
  • Remove the electrical cabinets in the pumping and filter rooms
  • Create a fibre optic loop for data security and communication
  • Install a redundant M580 PLC and remote racks to manage the station’s automation.
  • Replace cable routes and cables


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